Hi,

> I've looked at the FAQs, but have had a hard time making any 
> certain methods
> work.  I basically have XML that has a PaymentType, City, 
> Date and ID.  I
> need to group all records by PaymentType then by City.  I 
> need to total by
> city and by Payment type.  Here is some sample XML.

[...]

> II have been trying the for-each PaymentType[not(. =
> preceding::PaymentType)] approach.
> 
> Any thoughts on the best way to tackle this?

Muenchian Grouping, see <http://jenitennison.com/xslt/grouping/>. Either create the secondary key with only CityName or with concatenation of PaymentType, a delimiter character, and CityName-the latter is probably easier as you need to calculate the total too.

Cheers,

Jarno